{"product_id":"main-jet-99-si-carbs-195146","title":"Main Jet (#99); SI Carbs","description":"\u003cp\u003eThis is the small, cone-shaped jet at the bottom of the main jet stack. They come in various sizes ranging 82-165. Most vintage Vespas will use one in the 85-116 range, though performance-modded engines can drink a lot more gas and use much bigger jets. The larger the number, the more fuel will flow through.\u003c\/p\u003e\n\n\u003cp\u003eJetting is something that takes trial and error. See our \u003ca href=\"https:\/\/www.scooterworks.com\/blog\/2012\/08\/30\/carburetor-jetting-101\/\"\u003eblog\u003c\/a\u003e page of for more info.\u003c\/p\u003e","brand":"Spaco","offers":[{"title":"Default Title","offer_id":46757291524376,"sku":"195146","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/products\/195146_2508cc76-82e3-4de3-b661-853ff3a57d45.jpg?v=1695278977","url":"https:\/\/www.scooterworks.com\/products\/main-jet-99-si-carbs-195146","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}